I couldn't find the original study, but as an Australian, I'm shocked. 100% of homes require smoke detectors here, must be positioned outside of every bedroom,

I couldn't find the original study, but as an Australian, I'm shocked. 100% of homes require smoke detectors here, must be positioned outside of every bedroom, and must be less than 10 years old. It's a requirement for building. 83% seems crazy low to me, let alone 2%!